Forum Discussion
Jay_-n-_Lori
Sep 28, 2004Explorer
Munkalido,
The difference between the B300 and the M300, M400, and M500 is pretty simple, the B300 is a van frame, class C type. The M300,400,& 500 are class A frames, I am not sure what the MB300 is.
As far as headers and free flowing exhaust on the 440, I noticed more of a HP improvement over an MPG improvement. I had custom headers built for my 440 and found a remarkable increse in powerbut only gained abou 1-1.5 MPG fuel savings.
Jay
The difference between the B300 and the M300, M400, and M500 is pretty simple, the B300 is a van frame, class C type. The M300,400,& 500 are class A frames, I am not sure what the MB300 is.
As far as headers and free flowing exhaust on the 440, I noticed more of a HP improvement over an MPG improvement. I had custom headers built for my 440 and found a remarkable increse in powerbut only gained abou 1-1.5 MPG fuel savings.
Jay
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